import java.util.Scanner;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner num=new Scanner(System.in);
        while(num.hasNext()){
            char ber=num.next().charAt(0);
            char[] array={'A','E','I','O','U','a','e','i','o','u'};
            int i=0;
            int ret=0;
            for(i=0;i<10;i++){
                if(array[i]==ber){
                    ret=1;
                    break;
                }
            }
            if(ret==1){
                System.out.println("Vowel");
            }else{
                System.out.println("Consonant");
            }
        }
    }
}